platforms: [ .macOS(.v10_15) ], dependencies: [ .package(url: "https://github.com/vapor/vapor.git", .branch("async-await")), .package(url: "https://github.com/vapor/mysql-kit.git", from: "4.0.0"), .package(url: "https://github.com/Flight-School/AnyCodable", from: "0.6.0"), .package(url: "https://github.com/vapor/jwt-kit.git", from: "4.0.0"), ], targets: [ .target( name: "App", dependencies: [ .product(name: "Vapor", package: "vapor"), .product(name: "MySQLKit", package: "mysql-kit"), .product(name: "JWTKit", package: "jwt-kit"), .product(name: "AnyCodable", package: "AnyCodable") ], swiftSettings: [ .unsafeFlags(["-cross-module-optimization"], .when(configuration: .release)), // Disable availability checking to use concurrency API on macOS for development purpose // SwiftNIO exposes concurrency API with availability for deployment environment, // but in our use case, the deployment target is Linux, and we only use macOS while development, // so it's always safe to disable the checking in this situation. .unsafeFlags(["-Xfrontend", "-disable-availability-checking"]) ] ), .target(name: "Run", dependencies: [.target(name: "App")]) ] ) Package.swift (+ k8s などの設定ファイル) 作れば開発可能!